CN112531349B - Antenna unfolding mechanism - Google Patents
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- CN112531349B CN112531349B CN202011364849.9A CN202011364849A CN112531349B CN 112531349 B CN112531349 B CN 112531349B CN 202011364849 A CN202011364849 A CN 202011364849A CN 112531349 B CN112531349 B CN 112531349B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
- H01Q15/161—Collapsible reflectors
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Abstract
The invention discloses an antenna unfolding mechanism, which comprises: the antenna comprises an antenna base, a connecting hinge, a reflecting surface, a plurality of supporting ribs uniformly distributed and arranged along the antenna base and triggering ropes between the adjacent supporting ribs; the reflecting surface is attached to the upper surface of the supporting rib; the supporting ribs comprise a plurality of sub supporting ribs, and the sub supporting ribs are sequentially arranged in a hierarchical mode from small to large according to the distance between the sub supporting ribs and the antenna base in the unfolding state. According to the antenna unfolding mechanism provided by the invention, the supporting ribs can be folded in a sectional manner, the unfolding of the unfolding mechanism in a layered manner is realized in a purely mechanical triggering manner, additional driving and control components are not required, and the high folding rate, light weight and low cost of the antenna are effectively realized while the basic electrical performance index of the antenna is ensured.
Description
Technical Field
The invention relates to the technical field of satellite antennas, in particular to a large-aperture and light-weight mesh reflecting surface antenna unfolding mechanism.
Background
At present, the satellite-borne reflector antenna is widely applied to the fields of radar, communication, radio astronomy and the like. The development of the satellite-borne reflector antenna has the following trends: the antenna has large aperture, the large-aperture reflector antenna can obtain higher pointing performance and antenna gain, and the unfolding mechanism of the antenna needs to have larger unfolding area; the antenna is folded and miniaturized and is light in weight, more and more loads are transmitted in a one-arrow-and-multi-star mode, and the satellite-borne reflector antenna needs to have smaller folded volume and lighter weight; the cost is low, the commercialization in the aerospace field is rapidly developed, and the satellite load needs to have lower manufacturing cost.
However, the conventional umbrella-type mesh-shaped reflector antenna has a large folded volume and a large weight. The additional driving control assembly is needed to be added to the unfolding time sequence control, the unfolding mechanism is unfolded in a layered mode through electric signals, the mechanical design is not ingenious enough, and a series of problems are brought to the mechanical design, wherein the mechanical design comprises the following steps: the weight of the antenna is increased, the complexity of the antenna deployment mechanism is increased, and the manufacturing cost of the reflector antenna is increased.
Disclosure of Invention
The embodiment of the invention provides a large-aperture and light-weight netted reflecting surface antenna unfolding mechanism.
The technical scheme of the invention is realized as follows:
the embodiment of the invention provides a large-aperture and light-weight netted reflecting surface antenna unfolding mechanism, which comprises: the antenna comprises an antenna base, a connecting hinge, a reflecting surface, a plurality of supporting ribs uniformly distributed and arranged along the antenna base and triggering ropes between the adjacent supporting ribs;
the reflecting surface is attached to the upper surface of the supporting rib;
the supporting ribs comprise a plurality of sub supporting ribs, and when the plurality of sub supporting ribs are in a completely unfolded state, the sub supporting ribs and the antenna base are sequentially arranged from small to large according to the distance;
the connection hinge comprises a root hinge and an intercostal hinge, the support ribs are connected with the antenna base through the root hinge, and the plurality of sub-support ribs on each support rib are connected through the intercostal hinge;
elastic components are arranged on the root hinges and the intercostal hinges, and limiting components are arranged on the intercostal hinges and used for limiting the elastic components of the intercostal hinges to move;
one end of the trigger rope is connected with the limiting component of the intercostal hinge, and the other end of the trigger rope is connected with the intercostal hinge at the same level of the adjacent support rib.
Optionally, when the antenna unfolding mechanism is in a folded state, the sub-support ribs of the support ribs are bent with each other through the connection hinge, and the antenna is stored in a cylindrical shape.
Optionally, in the process of unfolding the antenna unfolding mechanism, the plurality of sub-support ribs are sequentially unfolded in a layered manner from small to large according to the distance between the plurality of sub-support ribs and the antenna base in the unfolded state.
Optionally, the sub-support rib starts to move under the action of the connecting hinge of the current level until the sub-support rib moves to a set position, the trigger rope of the next level drives the limiting component of the same level to move out of a limiting position, and the sub-support rib of the same level as the trigger rope starts to move under the action of the intercostal hinge of the same level.
Optionally, the length of the trigger rope is less than a set value; the set value is the distance between the limiting component connected with the triggering rope and the intercostal hinge at the same level of the adjacent supporting ribs when the antenna unfolding mechanism is in a fully unfolded state.
Optionally, during the unfolding process of the antenna unfolding mechanism, the projection of the antenna unfolding mechanism in a plane is circular, and the diameter of the circle is in positive correlation with the unfolding time of the antenna unfolding mechanism.
Optionally, the antenna deployment mechanism further comprises: a furling limiting component; the furling limiting component surrounds the outer sides of the plurality of supporting ribs so that the antenna unfolding mechanism is in a furling state.
Optionally, in the fully unfolded state of the antenna, the upper surface of each sub-support rib forms a continuous parabolic curved surface.
Optionally, the reflecting surface is a flexible mesh structure made of a metal material; the flexible netted structure is attached to the upper surface of the support rib.
The embodiment of the invention provides a large-aperture and light-weight netted reflecting surface antenna unfolding mechanism, which comprises an antenna base, a connecting hinge, a reflecting surface, a plurality of supporting ribs and triggering ropes, wherein the supporting ribs are uniformly distributed and arranged along the antenna base; the reflecting surface is attached to the upper surface of the supporting rib; the supporting ribs comprise a plurality of sub supporting ribs, and the sub supporting ribs are sequentially arranged in a hierarchical mode from small to large according to the distance between the sub supporting ribs and the antenna base in the unfolding state. When the plurality of support ribs are in an unfolded state, the reflecting surface forms a preset parabolic curved surface for converging antenna signals. According to the invention, each supporting rib is folded in a segmented manner, the layered unfolding of the unfolding mechanism is realized by adopting a purely mechanical triggering mode, no additional driving and controlling component is required to be added, and the high folding rate, the light weight and the low cost of the antenna are effectively realized while the basic electrical performance index of the antenna is ensured.
Drawings
Fig. 1 is a schematic structural diagram a of a large-aperture and lightweight mesh reflector antenna deployment mechanism according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram b of a large-aperture and lightweight mesh reflector antenna deployment mechanism according to an embodiment of the present invention;
fig. 3 is a schematic view of an expanded structure of a support rib of an expanded mechanism of a large-aperture and lightweight mesh reflector antenna according to an embodiment of the present invention;
FIG. 4 is a schematic view of a folded configuration of a single support rib provided by an embodiment of the present invention;
fig. 5 is a schematic view of a connection structure of a support rib of a large-aperture and lightweight mesh reflector antenna deployment mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of the support ribs in a closed state according to the embodiment of the present invention;
fig. 7 is a structural schematic diagram of an unfolding process of a large-aperture and lightweight mesh reflector antenna unfolding mechanism according to an embodiment of the present invention;
fig. 8 is a schematic projection diagram of an unfolding process of a large-aperture and lightweight mesh reflector antenna unfolding mechanism according to an embodiment of the present invention;
FIG. 9 is a schematic view of a first deployment phase according to an embodiment of the present invention;
FIG. 10 is a schematic view of a second deployment phase according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a third expansion phase according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram a of a large-aperture and lightweight mesh reflector antenna deployment mechanism according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram b of a large-aperture and lightweight mesh reflector antenna deployment mechanism according to an embodiment of the present invention.
The large-aperture and light-weight netted reflecting surface antenna unfolding mechanism provided by the embodiment of the invention comprises an antenna base 10, a connecting hinge 20, a reflecting surface 30, a plurality of supporting ribs 40 uniformly distributed and arranged along the antenna base 10 and trigger ropes 50 between the adjacent supporting ribs 40. The reflecting surface 30 is attached to the upper surface of the support rib 40. The support rib 40 includes a plurality of sub-support ribs 400, and when the plurality of sub-support ribs 400 are in a fully unfolded state, the sub-support ribs 400 are sequentially arranged from small to large with respect to the antenna base 10. The connecting hinge 20 comprises a root hinge 21 and an intercostal hinge 22, the root hinge 21 and the intercostal hinge 22 are both provided with an elastic component 23, and the intercostal hinge 22 is provided with a limiting component 221. The limiting assembly 221 is used for limiting the movement of the elastic assembly 23. One end of the trigger cable 50 is connected to the stopper member 221 of the intercostal hinge 22, and the other end of the trigger cable 50 is connected to the intercostal hinge 22 of the same level of the adjacent support rib 40.
As shown in fig. 3, fig. 3 is a schematic view showing an expanded structure of a support rib of an expanding mechanism of a large-aperture, lightweight mesh reflector antenna. The number of the support ribs 40 may be multiple, such as 24, 36, 48, which may be adjusted in advance according to the performance requirement of the antenna, each support rib 40 includes multiple sub-support ribs 400, and the support ribs 40 may be folded, so as to obtain a larger unfolding area under the same folding volume. The lower surface of the reflecting surface 30 is attached to the upper surface of the supporting rib 40 and spreads synchronously with the supporting rib 40. In the present embodiment, the number of the support ribs 40 may be selected to be 36, and each support rib 40 includes 3 sub support ribs 400.
In this embodiment, the number of trigger cords 50 corresponds to the number of intercostal hinges 22, and the length of the trigger cords 50 at different levels differs.
Illustratively, the first support rib and the second support rib are two adjacent support ribs 40 on the antenna unfolding mechanism, and each of the first support rib and the second support rib is composed of three sub-support ribs 400, which are arranged from small to large according to the distance from the antenna base in the unfolding state, and are a first sub-support rib 401, a second sub-support rib 402 and a third sub-support rib 403 in sequence. Wherein the inter-rib hinge 22 between the first sub-support rib 401 and the second sub-support rib 402 on the first support rib is a first-level inter-rib hinge, and the inter-rib hinge 22 between the first sub-support rib 401 and the second sub-support rib 402 on the second support rib is also a first-level inter-rib hinge, and the two are the same-level inter-rib hinges 22; the hinge between the second sub-support rib 402 and the third sub-support rib 403 on the first support rib is a two-level inter-rib hinge, and the hinge between the second sub-support rib 402 and the third sub-support rib 403 on the second support rib is also a two-level inter-rib hinge 22. The hierarchy of the trigger cord 50 is similar and will not be described in detail herein.
It should be noted that, although the inter-rib hinges 22 at different levels are similar in overall structure and function, there are still small differences in structure due to different positions, such as different mechanical interfaces and different rotation angles, which are related to the overall spread shape of the antenna.
During deployment, each sub-support rib 400 is directly driven by the elastic member 23 of the corresponding attachment hinge 20. Illustratively, the elastic member 23 in the root hinge 21 may be a coil spring, and the elastic member 23 of the intercostal hinge 22 may be a torsion spring.
In the embodiment, the supporting ribs 40 are processed in a segmented manner, so that in the unfolding process, each section of the sub supporting ribs 400 can be unfolded from the folded state step by step in sequence, the volume of the sub supporting ribs in the folded state is reduced, the folding rate is improved, and the sub supporting ribs 400 are connected through a pure mechanical structure, so that the hierarchical unfolding of the unfolding mechanism is realized in a triggering manner without adding additional driving and control components, the basic electrical performance indexes of the antenna are ensured, and meanwhile, the light weight and the low cost of the antenna are effectively realized.
In one embodiment, when the antenna unfolding mechanism is in the folded state, the sub-supporting ribs 400 of the supporting ribs 40 are mutually bent by the connecting hinge 20, and the antenna is stored in a cylindrical shape.
FIG. 4 is a schematic view of a folded configuration of a single support rib, as shown in FIGS. 4 and 6; fig. 6 is a structural view showing the folded state of all the support ribs. The lengths of the sub-support ribs 400 at different levels are different, and it can be understood that the length of the sub-support rib 400 far away from the antenna base 10 is smaller than the length of the sub-support rib 400 near the antenna base 10, and the specific length can be adjusted in advance according to the specification and the size of the antenna, thereby ensuring the smooth folding process and realizing the miniaturization of the folded state of the antenna.
In one embodiment, the sub-support rib 400 starts to move under the action of the connecting hinge 20 of the current level until the sub-support rib 400 moves to the set position, the trigger rope 50 of the next level drives the limiting component 221 of the same level to move out of the limiting position, and the sub-support rib 400 of the same level as the trigger rope 50 starts to move under the action of the inter-rib hinge 22 of the same level.
As shown in fig. 5, fig. 5 is a schematic view of the connection structure of the support rib. When the antenna is in the folded state, the trigger rope 50 is loose and unstressed, and the limiting component 221 is located at the limiting position to limit the movement of the elastic component 23. When the antenna starts to be unfolded and the sub-support rib 400 moves to the set position, the triggering rope 50 is straightened and drives the limiting component 221 at the same level to move out of the limiting position, thereby triggering the unfolding of the sub-support rib 400 at the next level of the sub-support rib 400.
In one embodiment, the first sub-support rib 401, the second sub-support rib 402, and the second sub-support rib 403 are sequentially unfolded during the unfolding of the antenna unfolding mechanism.
Fig. 7 is a structural diagram illustrating the unfolding process of the antenna unfolding mechanism, as shown in fig. 7. In the present embodiment, each support rib 40 includes three sub-support ribs 400, i.e., a first sub-support rib 401, a second sub-support rib 402, and a third sub-support rib 403, and the sub-support ribs 400 of the same level have the same length.
During the unfolding process of the antenna unfolding mechanism, the first sub-support ribs 401 on all the support ribs 40 are unfolded synchronously, and when the first sub-support ribs 401 move to a set position, the second sub-support ribs 402 are triggered to be unfolded synchronously, and further when the second sub-support ribs 402 move to another set position, the third sub-support ribs 403 are triggered to be unfolded synchronously. Thereby achieving sequential spreading of the sub-support ribs 400.
It should be noted that, in the collapsed state, the elastic component 23 in the intercostal hinge 22 is constrained by the limiting component 221, and when the first sub-support rib 401 moves to the set position, the trigger rope 50 is straightened, and then the limiting component 221 is driven to move out of the limiting position, so that the second sub-support rib 402 starts to move under the action of the intercostal hinge 22.
In one embodiment, the length of the trigger cable 50 is less than a set value, which is the distance between the stop assembly 221 connected by the trigger cable 50 and the intercostal hinges 22 of the same level of adjacent support ribs 40 when the antenna deployment mechanism is in the fully deployed state.
Specifically, the length of the trigger cable 50 is slightly smaller than the set value, and during the deployment of the antenna deployment mechanism, the distance between the limiting component 221 connected with the trigger cable 50 and the intercostal hinge 22 at the same level of the adjacent support rib 40 gradually increases until the trigger cable 50 is straightened. Since the length of the trigger cable 50 is slightly smaller than the set value, when the antenna deployment mechanism is further deployed to the fully deployed state, the trigger cable 50 drives the position-limiting component 221 to move out of the position-limiting position, thereby achieving sequential deployment of the sub-support ribs 400.
In one embodiment, during deployment of the antenna deployment mechanism, a projection of the antenna deployment mechanism in a plane has a circular shape with a diameter that is positively correlated to a deployment time of the antenna deployment mechanism.
As shown in fig. 8, fig. 8 is a projection diagram of the unfolding process of the antenna unfolding mechanism. Mathematically, an "envelope" of a family of planar lines (or curves) refers to a curve that is tangent to any one of the family of lines (or curves). In the present embodiment, the specification and size of each support rib 40 are the same, the projection thereof corresponds to the same center angle, each support rib 40 includes the same number of sub-support ribs 400, the radian of the sub-support ribs 400 at the same level is the same, and the length of the sub-support members 20 at the same level is the same. Based on this, in the process of the antenna unfolding, a curve tangent to the plane projection of all the supporting ribs 40 exists, namely, an enveloping circle, the diameter of the enveloping circle (namely, the circumference of the projected circle) is in positive correlation with the unfolding time of the antenna unfolding mechanism, and in the process of the antenna unfolding mechanism from the folded state to the completely unfolded state, the diameter of the circle is gradually increased along with the time. Note that the projection direction of the planar projection is a direction perpendicular to the upper surface and/or the lower surface of the antenna base 10.
In one embodiment, referring again to fig. 6, the antenna further includes a furling limiting element 60, and the furling limiting element 60 surrounds the outside of the supporting ribs 40 to keep the antenna unfolding mechanism in a furled state.
Specifically, the furl limit assembly 60 may be an annular lock to restrain the limit support rib 40, and the limit is terminated when a remote switch on the furl limit assembly 60 receives a control signal to release the limit, for example, an explosive bolt is provided on the annular lock, and the explosive bolt can be triggered by an electrical signal for remote control. When the restriction is terminated, the root hinges drive the first sub-support rib 401 to move, and when the first sub-support 401 moves to a set position, the elastic members 23 in the inter-rib hinges 22 drive the second sub-support rib 402 to start moving, thereby achieving sequential stepwise deployment.
In one embodiment, referring to fig. 2 again, in the fully unfolded state of the antenna, the upper surface of each sub-supporting rib 400 forms a continuous parabolic curved surface. The curvature of the parabolic curved surface is related to the reflectivity of the reflecting surface 30, and can be adjusted according to actual needs. It can be understood that the lengths and the curvatures of the sub-support ribs 400 of the same level are the same, and the lengths and the curvatures of the sub-support ribs 400 of different levels are different to some extent, whereby the upper surfaces of the sub-support ribs 400 form a continuous parabolic curved surface.
In one embodiment, the reflective surface 30 is a flexible mesh structure made of metal material capable of reflecting electromagnetic waves, and the mesh structure is attached to the upper surface of the support rib 40.
The reflecting surface 30 is spread as the supporting ribs 40 are spread, and the size of the reflecting surface 30 may be adjusted in advance according to the performance requirements of the antenna.
In one embodiment, the reflective surface 30 is a gold-plated molybdenum wire mesh.
In the present embodiment, in order to achieve a light weight design, a gold-plated molybdenum wire mesh is used as the reflective surface 30, and the gold-plated molybdenum wire mesh is a flexible mesh surface that is woven by gold-plated molybdenum wires and can reflect electromagnetic waves. The upper surface of the supporting rib 40 is processed into a parabolic curved surface required by the antenna, and the gold-plated molybdenum wire mesh is sewn on the upper surface of the supporting rib 2 through a fixed node, so that the parabolic curved surface configuration of the antenna is formed.
In a specific embodiment, the support rib in the structure of the antenna may be selected as three segments of sub-support ribs, including a root rib (corresponding to the first sub-support rib 401 in the above-mentioned embodiment) close to the antenna base, a tail rib (corresponding to the third sub-support rib 403 in the above-mentioned embodiment) far away from the antenna base, and an intermediate rib (corresponding to the second sub-support rib 402 in the above-mentioned embodiment) between the root rib and the tail rib. The root rib and the antenna base are movably connected through a root hinge (equivalent to the root hinge 21 in the above embodiment), a coil spring is arranged in the root hinge, the root rib and the middle rib are movably connected through a middle hinge (equivalent to the intercostal hinge 22 of the first level in the above embodiment), the middle rib and the tail rib are movably connected through a tail hinge (equivalent to the intercostal hinge 22 of the second level in the above embodiment), torsion springs and limit pins are arranged in the middle hinge and the tail hinge, and the limit pins are detachably connected with the middle hinge and the tail hinge to adjust the states of the torsion springs. It should be noted that although the middle hinge and the tail hinge are both included in the inter-rib hinge 22 in the above embodiment, there are still slight differences in structure in the present embodiment due to the difference in position, such as the difference in mechanical interface between the two and the difference in rotation angle, which is related to the overall unfolded shape of the antenna.
The unfolding process of the antenna unfolding mechanism can be divided into three stages, wherein the first stage is unfolding of the root rib, the second stage is unfolding of the middle rib, and the third stage is unfolding of the tail rib. Specifically, the method comprises the following steps:
the first stage, as shown in fig. 9: the limiting part can be selected as a wrapping tape, an explosion bolt is arranged on the wrapping tape, and the state of the explosion bolt can be controlled through a remote signal. Under the initial condition, the folded antenna is bound by the wrapping belt, the antenna unfolding mechanism is in a multi-section folded state at the moment, the whole volume of the antenna is smaller, more antennas can be placed under the condition that the storage space is certain, or the storage space can be saved when the same number of antennas are stored, so that the antenna is convenient to transport. When the antenna is in a folded state, the coil spring in the root hinge is in a force storage state, has a tendency of driving the root rib to be unfolded outwards, and is bound by the belt. After the explosive bolts on the belting receive the instruction signal for releasing the limitation, the limitation of the belting is released, and the root ribs are unfolded outwards under the action of the coil springs.
Second stage, as shown in fig. 10: the adjacent middle hinges are connected by a trigger rope (corresponding to the trigger rope 50 in the above-mentioned embodiment), wherein one end of the trigger rope is fixedly connected with the non-movable part on the middle hinge, and the other end is connected with a limit pin (corresponding to the limit component 221 in the above-mentioned embodiment) on the adjacent middle hinge. Before the sub-support ribs in the second stage are unfolded, the trigger rope is in a loose and unstressed state, and the limiting pin prevents the middle hinge from driving the middle ribs to move. Along with the gradual expansion of root rib, the interval between the adjacent middle hinge increases, is in taut state until triggering the rope, along with the further expansion of root rib, triggers the spacing between the spacer pin that the rope is connected and the intercostal hinge of the same level of adjacent support rib and reaches the second specified value, triggers the rope and drives the spacer pin and shift out to make middle rib outwards expand under the effect of torsional spring.
The third stage, as shown in fig. 11: the adjacent tail hinges are connected through another trigger rope with a specific length. One end of the trigger rope is fixedly connected with the non-movable part on the tail hinge, and the other end of the trigger rope is connected with the limiting pin on the adjacent tail hinge. Before the sub-support rib of the third stage is unfolded, the trigger rope is in a loose and unstressed state, and the limiting pin prevents the torsion spring from driving the tail rib to move. With the further expansion of the middle rib, the distance between the limiting pin connected with the trigger rope and the tail hinge at the same level of the adjacent support rib reaches a first specific value, and the trigger rope drives the limiting pin to move out, so that the tail rib expands outwards under the action of the torsion spring. Thereby, the sequential unfolding process of the three support ribs is completed.
It can be understood by those skilled in the art that the number of the support ribs is not limited to three, and the number of the support ribs can be two, four, five or more according to the actual requirement. The principle of deployment is the same as that of the stages described above.
This embodiment is divided into multistage swing joint with the support rib through the hinge to control the expansion process of support rib through triggering rope and spacer pin, make the support rib can fold through the segmentation, reduced its volume under the state of drawing in, improved the rate of drawing in, and, owing to adopt the pure mechanical form of triggering to realize the hierarchical expansion of deployment mechanism, need not to increase extra drive and control assembly, when guaranteeing the basic electrical property index of antenna, realized the lightweight and the low cost of antenna effectively.
Features disclosed in the product embodiments provided in the present application may be combined arbitrarily to obtain new product embodiments without conflict.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (6)
1. An antenna deployment mechanism, characterized in that, antenna deployment mechanism is parabolic antenna deployment mechanism or umbrella antenna deployment structure, antenna deployment mechanism includes: the antenna comprises an antenna base, a connecting hinge, a reflecting surface, a plurality of supporting ribs which are uniformly distributed and arranged along the circumferential direction of the antenna base and trigger ropes between the adjacent supporting ribs;
the reflecting surface is attached to the upper surface of the supporting rib;
the supporting ribs comprise a plurality of sub supporting ribs, and when the plurality of sub supporting ribs are in a completely unfolded state, the sub supporting ribs and the antenna base are sequentially arranged from small to large according to the distance;
the connection hinge comprises a root hinge and an intercostal hinge, the support ribs are connected with the antenna base through the root hinge, and the plurality of sub-support ribs on each support rib are connected through the intercostal hinge;
elastic components are arranged on the root hinges and the intercostal hinges, and limiting components are arranged on the intercostal hinges and used for limiting the elastic components of the intercostal hinges to move;
one end of the trigger rope is connected with the limiting component of the intercostal hinge, the other end of the trigger rope is connected with the intercostal hinge of the same level of the adjacent support rib, when the sub-support rib moves to a set position, the trigger rope of the next level drives the limiting component of the same level to move out of the limiting position, the sub-support rib of the same level with the trigger rope starts to move under the action of the intercostal hinge of the same level, and the plurality of sub-support ribs are sequentially unfolded in a layered level from small to large according to the distance between the sub-support ribs and the antenna base in an unfolding state;
when the antenna unfolding mechanism is in a folded state, the sub-supporting ribs in the supporting ribs are mutually bent through the connecting hinges, and the antenna is stored in a cylindrical shape.
2. The antenna deployment mechanism of claim 1 wherein the length of the trigger cable is less than a set value;
the set value is the distance between the limiting component connected with the triggering rope and the intercostal hinge at the same level of the adjacent supporting ribs when the antenna unfolding mechanism is in a fully unfolded state.
3. The antenna deployment mechanism of claim 1, wherein a projection of the antenna deployment mechanism in a plane during deployment of the antenna deployment mechanism is circular, a diameter of the circle being positively correlated with a deployment time of the antenna deployment mechanism.
4. The antenna deployment mechanism of claim 1, further comprising: a furling limiting component; the furling limiting component surrounds the outer sides of the plurality of supporting ribs so that the antenna unfolding mechanism is in a furling state.
5. The antenna deployment mechanism according to claim 1, wherein an upper surface of each sub-support rib forms a continuous parabolic curved surface in a fully deployed state of the antenna.
6. The antenna deployment mechanism of claim 5, wherein the reflective surface is a flexible mesh structure of metal; the flexible netted structure is attached to the upper surface of the support rib.
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| CN202011364849.9A CN112531349B (en) | 2020-11-27 | 2020-11-27 | Antenna unfolding mechanism |
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| CN202011364849.9A CN112531349B (en) | 2020-11-27 | 2020-11-27 | Antenna unfolding mechanism |
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| CN112531349B true CN112531349B (en) | 2022-02-08 |
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| NL1004026C2 (en) * | 1996-09-13 | 1998-03-20 | Werner B V | Screen construction. |
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| US6104358A (en) * | 1998-05-12 | 2000-08-15 | Trw Inc. | Low cost deployable reflector |
| US6278416B1 (en) * | 1999-11-18 | 2001-08-21 | Harris Corporation | Surface edge enhancement for space-deployable mesh antenna |
| KR100376331B1 (en) * | 2001-01-22 | 2003-03-15 | 주식회사 선우커뮤니케이션 | Microstrip floded dipole omni-antenna |
| US20030159724A1 (en) * | 2002-02-26 | 2003-08-28 | Hsien-Sao Wu | Automatically unfold-and-fold structure of the folded umbrella |
| CN101276961B (en) * | 2008-05-16 | 2012-08-15 | 哈尔滨工业大学 | Rigidizable inflating-expansion radial direction rib support type offset-feed paraboloidal antenna |
| CN104022337B (en) * | 2014-06-17 | 2016-05-18 | 哈尔滨工业大学 | Modular space curved surface folding exhibition antenna mechanism based on rib mechanism |
| CN105846044B (en) * | 2016-04-07 | 2018-07-03 | 西安交通大学 | A kind of foldable umbrella antenna structural framework and method of deploying |
| CN105720349B (en) * | 2016-04-07 | 2018-04-17 | 西安交通大学 | A kind of deployable umbrella antenna structural framework of slidingtype and method of deploying |
| WO2020036623A2 (en) * | 2018-01-08 | 2020-02-20 | Umbra Lab, Inc. | Articulated folding rib reflector for concentrating radiation |
| US10707552B2 (en) * | 2018-08-21 | 2020-07-07 | Eagle Technology, Llc | Folded rib truss structure for reflector antenna with zero over stretch |
| US10811759B2 (en) * | 2018-11-13 | 2020-10-20 | Eagle Technology, Llc | Mesh antenna reflector with deployable perimeter |
| CN110994118B (en) * | 2019-11-18 | 2021-07-02 | 西安电子科技大学 | Rope-driven umbrella-shaped Cassegrain antenna main and auxiliary surface stable unfolding mechanism |
| CN110854542B (en) * | 2019-11-29 | 2021-06-18 | 上海宇航系统工程研究所 | Expandable grid supported folding rib type antenna reflector |
| CN111740229B (en) * | 2020-07-29 | 2024-05-24 | 湖南航天环宇通信科技股份有限公司 | Large-caliber vehicle-mounted expandable composite antenna |
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